Immatics (IMTX) had the highest return in Q4 2018 by a US stock, returning 195,900%.

ASSET	QUARTER	% RETURN
Immatics (IMTX)	Q4 2018	195,900%
Ainos (AIMD)	Q4 2018	5,525%
Reliance Global (RELI)	Q4 2018	548.14%
Iveda Solutions (IVDA)	Q4 2018	294.74%
vTv Therapeutics (VTVT)	Q4 2018	231.25%
Serina Therapeutics (SER)	Q4 2018	164.6%
Energy of Minas Gerais Co DRC (CIG.C)	Q4 2018	145.06%
Nocera (NCRA)	Q4 2018	135.29%
Gravity (GRVY)	Q4 2018	134.36%
American Battery Technology Company Common Stock (ABAT)	Q4 2018	113.79%
Companhia Energetica de Minas Gerais CEMIG Pref ADR (CIG)	Q4 2018	109.7%
Harrow Health (HROW)	Q4 2018	104.68%
Adial Pharmaceuticals (ADIL)	Q4 2018	85.51%
Inuvo (INUV)	Q4 2018	78.33%
Twist Bioscience (TWST)	Q4 2018	77.62%
Astrotech (ASTC)	Q4 2018	74.09%
Daxor (DXR)	Q4 2018	73.36%
COSCIENS Biopharma (CSCI)	Q4 2018	70.93%
MOGU (MOGU)	Q4 2018	70.75%
Fluent (FLNT)	Q4 2018	67.44%
Marin Software (MRIN)	Q4 2018	66.98%
Centrais Electricas Brasileiras (EBR)	Q4 2018	61.58%
Windtree Therapeutics (WINT)	Q4 2018	60.26%
Centrais Elétricas Brasileiras SA - Eletrobrás (EBR.B)	Q4 2018	59.56%
American Superconductor (AMSC)	Q4 2018	59.29%